Cristobalite

Mineral: Cristobalite

 

Cristobalite can be characterised by:

• High brightness
• Relatively high Mohs hardness of 6.5
• Relatively low refractive index, making it a transparent filler in various binders
• High inertness in various media
• Transparency for UV-radiation (i.e. suitable for UV-curing processes)

Note when using cristobalite: depending on the particle size distribution of the product, it can be labelled (STOT RE 2 or STOT RE 1). For more detailed information, visit www.safesilica.eu.

 

Basic properties

Property	Value	Unit
Moisture		[%]
pH	9	[-]
Hardness (Mohs)	6.5	[-]
Refractive index	1.48	[-]
Colour (D65/ 10°) L*	98	[-]
Density	2.3	[kg/ dm3]

 

Products

Name	Grade	D50	D90	OA
Sibelite	M3000	17	40	26
	M3500	10	30	26
	M4000	6	12	27
	M6000	4	8	28

 

Production Location: Dessel (BE), Maastricht (NL)

Application

Cristobalite will provide:

• Dirt pick-up resistance: the presence of cristobalite improves the sealant’s resistance to dirt (from the atmosphere, for example)
• UV resistance and weatherability: due to its inertness, cristobalite supports good UV and weatherability performance to sealants and adhesives when applied outside

Functionalities

Durability

Optical